Lock



S. GJUKIC.

LocK.- APPLICATION F-ILED OCT- 30' |920.

Patented Apr. 19, 1921.

3 SHEETS- SHEET s- FIG. 5. F'IG. 6.

INVENTOR. Q'J'ukc SiMo eau-Klo, kor COLUMBUS, 01110.

LOCK.

incassa.

- Specification of Letters Patent. Pai-,mated kp-r. 19, 19210 Application iled Qctobci 30, 1920. Serial No. 420,705. I

A further object ofthe invention is toV provide a door lock wherein a sliding latch bolt is adapted to be engaged by a'key operated tensioned latch device for retaining the bolt in its locked position, the opposite sides of the door being provided with differently shaped key receiving openings for different keys for releasing the latch devicefrom either side of the door. e With the above and other objects in view, the invention consists in the novel form,

combination and arrangement of parts hereinafter more fully described in connection with the accompanying drawings, and in which like reference characters indicate similar parts throughout the several views.

ln the drawings,

Figure 1 is a fragmentary sectional view of a portion of a door and casing with the cover of the lock casing removed and with portions of the lock mechanism shown-in section,

Fig. 2 is a horizontal sectional view taken on line ll-ll of Fig. 1,

Fig. 3 is an elevational view, similar to Fig. 1 showing the sliding latch bolt in its retracted position with the key entering the outer side of the door retracting the latch device from engagement with the sliding latch bolt, v

V Fig. 4 is a horizontal sectional view taken on line IV-IV of Fig. 3,

Fig. 5V is a fragmentary elevational View of the outer side ofthe door showing the shape'of the key hole, Y

Fig. 6 is a fragmentary elevational view of the inner side of the door showing a differently shaped keyhole,

Fig. 7 is anelevational view of the knob and spindle removed from the lock, with one section of one knob removed and f Fig. 8 Shows side elevational and end views of the key for releasing the lockatr the outer side of the door,

Referring more in detail to the accompanying drawings, there is illustrated a portion of a door 1 and a door frame 2, the door 1 being provided with an edge socket as shown in Figs. 2 and 4 for receiving a lock casing 3 while the adj acentA edge of the door frame 2 is provided with a face plate 4 having a central opening therein registering with thebolt keeper socket 5, the face plate being secured to the door frame by fastening devices 6 while the front walll? of the lock casing 3 carries upper and lower flanges 8 countersunk in the edge of the door 1 and secured thereto by fastening devices 9.

The lock casing preferably comprises integral side and end walls, the corners of the casing adjacent the open side being provided with lugs 10 to receive fastening devices 11 for securing the face plate 12 of the lock to the casing. The forward end wall Y 7 of the lock casing is provided with a central opening accommodating the projection ofthe sliding latch bolt for reception in the keeper socket V5 as shown in Figs. 1 and 3.

As shown in F igs.V 1 to 4, the integralside wall of the casing 3 carries a pair of armsv .14 and 15 projecting in parallelism and having `openings therein for the passage of the sliding latch bolt 16,'the bolt 16 having a reduced shank portion 16 extending through the arm 14 while the head of the bolt projects through the arm 15. To hold the bolt forwardly projected, an expansion coil spring 17 surrounds the shank 16 of the bolt and engages at one of its ends the shoulder 14 and at its other end the cross pin 18 extending through the bolt. The4 shifting mechanism for thc sliding latch bolt 16 includes the formation lof a socket 19 opening'at the endV of the bolt shank '16` Vcarried, by a band 21 is received. Av sleeve 22 is rotatable in the bandl 21as shown' in Figs. 1 and 3 and has van inwardly directed block projection 23 the inner edge of which is provided withV a cylindrical socket 24 communicating with a restricted passage 24 openingin the center ofthe cylinder 22. A knob spindle 25'shown in'detail in Fig. 7l carries a longitudinal lug 28, the spindle 25 Y extending into the socket 24 in the cylinder block 23 with the lug 26 projecting into the restricted opening 24 of the cylinder block as shown in Figs. 1 and 3 to cause the cylinder to rotate withthe spindle v25.

posite ends of the spindle project through opposite sides of the door 1 as shown inFig. 2 and a knob 27 attached to each end thereof, each knob being of two-part construction as shown in Fig. 7 and secured together by the pin 28, the sections of the knob inclosing the spindle extensions 29. Y

A device is provided for retaining the sliding latch bolt 16 in its locked position, guide flanges 30 being provided upon the bottom wall of the lock casing and receiving a sliding frame 31 having a longitudinal slot 32 through which a transverse pin 33 extends tov maintain the member 31 in position. One end of the sliding member 31 hasan angular upstanding arm 34 projectingbeyond the key receiving opening in the side of the casing and with which the key is adapted to be engaged for shifting-the sliding member 31. A pin 35 extends transversely of the casing adjacent the opposite end'of the sliding member 31 and supports aA journaled sleeve 36 carrying a depending arm 37 having at the lower end thereof a pin 38 extending into the slot 32 of the sliding member while a curved latch arin 39 is carried by the sleeve 36 and extends upwardly therefrom and passes through a guide bracket` 40 secured to the -side wall of the casing 3 with the nose 41 of the latch arm extending through an opening in an angle extension 42 carried by the lower end of the bracket 15, a coil spring 43 surrounding the latch rod between lthe guide bracket 40 and the angle extension42 of the bracket 15 normally to hold the nose 441 of the latch at the limit of its forward movement. The

lower face of the sliding latch bolt 16 is f projected with a recess 44 defining an abutportion 47.

ment shoulder 45 against which the flat face of the latch nose is adapted to engage and limit the forward projecting movement of the sliding latchbolt` as influenced by the spring 17.

A key of the type shown in Fig. 8 is employed for releasing the latch device from the outer side of the door 1, the key comprising a handle 46 having a shank including a straight blade section 47, a right angular o'set 48 at the lower .end thereof and.

an inclined blade portion 49 extending from the offset 48 having the lower end thereof substantially in alinement with the blade An escutcheon plate 50V is secured to the outer face of the door 1 and carriesa disk 51 rotatably mounted therein adjacent the lower end with an opening 52 therein corresponding to the key plate in An escutcheon plate 53 lis carried by the inner face of the door and The ophas a disk 54 rotatably mounted therein adjacent the lower end and is provided with a slot 55 havingan end offset portion 56 for receiving a similarly shaped key, the slots 52 and 65 in the disks 51 and 54 respectively are alined with each other through the lock casing 3 and extend inwardly of the angle arm 24 carried by the sliding 'member'31 for operating the latch* device.

In the operation of the device, assuming that the sliding latch bolt 16 is in the position shown in Fig. 1 projected through the opening 13 in the casing wall 7 and into the the key employing the relatively angular` blade portions 47 and 49 is inserted in the key slot 52 of the -disk 51 with the inner end thereof positioned inwardly of the angle arm 34 of the sliding latch operating member 31. By rotating the key 46 to the position shown in Fig. 3., the blade 49 of the key engages the angle arm 34 to shift the sliding member 31 guided by the pin 33 and the guide 34 to rotate the sleeve 36 upon the shaft 35, moving the arm 37 to the sleeve and the curved latch arm 39, thereby lowering the latch head 41 from engagement with the sliding latch bolt 16 at which time the knob spindle 25 will be rotated to shift the ring 22 within the sleeve 21 effected by the lug 26 of the knob spindle lockfing the spindle to the block 23 of the sleeve 22. 1totation of the spindle will cause` a translating movement of the ring 21 and the connection 19 and 2O between the sleeve and latch bolt will withdraw the latch bolt against the tension of the spring 17 to the position shown in Fig. 3 to free the projected-end of the latch to remove the projected end of the latch from the keeper socket 5 in the door frame, at which time the door may be swung to an open position. The key 46 may then be removed from the slot 52 and the upper end of the latch head 41 will engageV the lower face of the sliding latch bolt 16. 1n locking the door, the sliding latch bolt 16 is reversely shifted to the projected position shown in Fig. 1 by rotation of the knob spindle 25 to positionl theV notch 44 in the lower end of the latch bolt for reception of the latch head 41, the spring 43 elevating the latch head to automatically lock the door. To release the lockmechanism from the inner side of the door, akey conforming to the shape of the slot 55 shown' in Fig. 6 is employed with the inner end thereof positioned for engagement with the angle arm Y 34 of the sliding member 31 andthe operation by rotating the key is the same as above described.

While there is herein shown and described the preferred embodiment of the invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

What is claimed as new is: Y

l. A door lock of the type described comprising a casing, a sliding latch bolt mounted therein, a latch device pivotally mounted within the casing and comprising a downwardly extending arm and an upwardly curved arm, a latch head carried by the upper end of the curved arm, a coil spring surrounding the curved arm and engaging the head 'of the latch device for normally forcing the same into positive engagement with the sliding latch bolt to hold the same in locked position, a sliding member guided in its movements by the lower wall of the casing and connected to the downwardly extended arm of the latch device, an angle arm extending upwardly from one end of the sliding member and adapted to be engaged by a key projection within the casing for shittingV the sliding member to free the latch device from engagement with the sliding latch bolt and a'knob spindle removed with the sliding latch bolt to retract the same to inoperative position.

2. A door lock of the type described comprising a casing, a sliding latch bolt mounted therein, aA coil spring surrounding the latch bolt cooperating with the casing and bolt to hold the bolt normally projected from the casing, a sleeve member having a swivel connection with the inner end of the sliding latch bolt, a tubular sleeve within said ring member and a knob spindle extending into saidsleeve and eccentrically connected thereto for shifting the ring member and sliding latch bolt swivelly connected thereto to retract the same to inoperative position within within the casing, and a latch device asso-- ciate-d with the sliding latch bolt Jfor holding the same inV locked projected position.

4l. A door lock of the type describedcom-y prising a casing, a'sliding latchbolt mounted therein, a coil spring surrounding the latch bolt cooperating with the casing and bolt to hold the bolt normally projected from the casing, a sleeve member having a swivel connection with the inner end of the.

sliding latch bolt, a tubular sleeve within said ring member, a knob spindle extending into said sleeve and eccentrically connected v thereto for Vshifting the ring member and sliding latch bolt swivelly connected thereto to retract the same to inoperative position within the casing and a key operated latch device associated with the sliding latch bolt to hold the same in projected locked position.

In testimony whereof I aix my signature.

siMo eJUKIc.

sov 

